Fixes for karaf 4.2.1 CLI annotations for segment routing app

Change-Id: Id3722bf49c37fe480ab8973c228987cc526804b3
diff --git a/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/cli/XconnectAddCommand.java b/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/cli/XconnectAddCommand.java
index 01c3001..762b9f3 100644
--- a/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/cli/XconnectAddCommand.java
+++ b/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/cli/XconnectAddCommand.java
@@ -18,9 +18,13 @@
 import com.google.common.collect.Sets;
 import org.apache.karaf.shell.api.action.Argument;
 import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.Completion;
 import org.apache.karaf.shell.api.action.lifecycle.Service;
 import org.onlab.packet.VlanId;
 import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cli.PlaceholderCompleter;
+import org.onosproject.cli.net.DeviceIdCompleter;
+import org.onosproject.cli.net.PortNumberCompleter;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.PortNumber;
 import org.onosproject.segmentrouting.xconnect.api.XconnectService;
@@ -36,21 +40,25 @@
     @Argument(index = 0, name = "deviceId",
             description = "Device ID",
             required = true, multiValued = false)
+    @Completion(DeviceIdCompleter.class)
     private String deviceIdStr;
 
     @Argument(index = 1, name = "vlanId",
             description = "VLAN ID",
             required = true, multiValued = false)
+    @Completion(PlaceholderCompleter.class)
     private String vlanIdStr;
 
     @Argument(index = 2, name = "port1",
             description = "Port 1",
             required = true, multiValued = false)
+    @Completion(PortNumberCompleter.class)
     private String port1Str;
 
     @Argument(index = 3, name = "port2",
             description = "Port 2",
             required = true, multiValued = false)
+    @Completion(PortNumberCompleter.class)
     private String port2Str;